feat: add pr-title workflow

.github/PULL_REQUEST_TEMPLATE.md

@@ -3,4 +3,16 @@
 ## Why
 
 ## Notes
-<!-- Add any notes here -->
+<!-- Add any notes here -->
+
+## Labels
+
+Assign the following labels to the PR:
+
+`security` - to trigger image scanning in CI build
+
+## PR Comments
+
+Add the following comments to the PR:
+
+`/e2e` - to trigger E2E build

.github/workflows/validate-pr-title.yaml

@@ -0,0 +1,21 @@
+## Reference: https://github.com/amannn/action-semantic-pull-request
+name: PR title
+
+on:
+  pull_request:
+    types:
+    - opened
+    - reopened
+    - edited
+    - synchronize
+
+jobs:
+  validate-pr-title:
+    runs-on: ubuntu-latest
+    steps:
+
+    - uses: amannn/[email protected]
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        requireScope: false